Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9564829 | Converter arm and associated converter device | Jürgen Häfner | 2017-02-07 |
| 8823413 | Digital input with variable impedance | Krister Nyberg, Tommy Segerbäck | 2014-09-02 |
| 8817444 | Control arrangement | — | 2014-08-26 |
| 8738331 | Increased reliability in the processing of digital signals | Krister Nyberg | 2014-05-27 |
| 8651878 | I/O module | — | 2014-02-18 |
| 8598887 | Fault wave arrival determination | — | 2013-12-03 |
| 8532144 | Point-to-point communication in a high voltage power transmission system | Krister Nyberg | 2013-09-10 |
| 8493866 | Redundant computers and computer communication networks in a high-voltage power transmission system | Krister Nyberg | 2013-07-23 |
| 8411400 | Method and apparatus for mitigation of dynamic overvoltage | Ulf Andersson, John Daniel, David L. Dickmander | 2013-04-02 |
| 8305095 | Voltage measurements of electrically conducting elements in systems for controlling electrical processes | Krister Nyberg | 2012-11-06 |
| 8305782 | Redundant current valve control in a high voltage power transmission system | Krister Nyberg | 2012-11-06 |
| 8300435 | Transmission system and a method for control thereof | Rolf Lungqvist | 2012-10-30 |
| 7062359 | Substation control system | — | 2006-06-13 |
| 6411067 | Voltage source converters operating either as back-to-back stations or as parallel static var compensators | — | 2002-06-25 |
| 6205039 | Device for supervising a high voltage converter station | Urban Astrom, Krister Nyberg, Roland Siljeström, Gunnar Asplund | 2001-03-20 |
| 6185116 | HVDC power transmission system with cooling and switching device temperature detection | Urban Astrom, Krister Nyberg, Roland Siljeström, Gunnar Asplund | 2001-02-06 |
| 6084787 | Device for supervising in a high voltage converter station | Krister Nyberg, Roland Siljeström, Urban strom, Gunnar Asplund | 2000-07-04 |
| 5969956 | Method and a device for communication in a high voltage converter station | Krister Nyberg, Gunnar Asplund, Roland Siljeström, Urban strom | 1999-10-19 |
| 5903155 | Method of measurement for fault-distance determination on a HVDC power transmission line having at least two lines connected in parallel | — | 1999-05-11 |
| 4377780 | Means for damping mechanical torsional oscillations of an electric a.c. generator | — | 1983-03-22 |